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The sky brightness


Average brightness in mag/arcsec2

h U B V
90o 21.43

+/-0.07

 21.20

+/-0.07

 20.85

+/-0.06
50o 21.24

+/-0.15

 20.95

+/-0.16

 20.62

+/-0.16
30o 21.00

+/-0.22

 20.63

+/-0.24

 20.27

+/-0.25

 

 

The atmospheric absorption
Last Updated on Wednesday, 29 December 2010 11:01